Gem-Knights Deck #774247 — Yu-Gi-Oh! Master Duel

40 Main, 15 Extra, incl. Buio the Dawn's Light x3, Darklord Djehuty x3, Gem-Knight Nepyrim x3. Created Oct 25, 2026 by YGO Mod.

Deck Gem-Knights Master Duel

Created by: YGO Mod (20517634)

Created On: 10/25/2026

 
 


Official AI Deck Power Analysis
MidrangeConfidence: LowEvaluated Oct 27, 2026
35± 10/ 100
Power Score
Structural 56
Reliability 45
Going First 58
Going Second 55

Deck — Deck Power Evaluation

Final Contextual Deck Power: 35/100 (±10 · Confidence: Low)

Overall score Value
Structural Deck Power 56
Going First 58
Going Second 55
Meta Power provisional
Tournament Reliability 45
  • Primary strategy: Midrange
  • Secondary strategies: Combo, Toolbox
  • Format: master-duel

Legality

Main 40 / Extra 15 / Side 0 — status under the rules at evaluation time: Illegal. 1 violation(s).

Identity & game plan

  • Win condition: Fusion Summon large Fairy/DARK and Gem-Knight Fusion monsters (The First Darklord, Darklord Eveningstar, Gem-Knight Lady Brilliant Diamond) through Brilliant Fusion, Mutiny in the Sky and Darklord Dance, then convert with 3000+ ATK bodies.; Recursion-driven grind through Darklord Gulgolet, Darklord Contact and Mutiny in the Sky from the GY, with hand traps protecting the engine.
  • Turn 1 (going first): Normal Summon a searcher (Gem-Knight Nepyrim, Indulged Darklord or Darklord Djehuty), search a Darklord or Gem-Knight, then reach a Fusion Summon via Brilliant Fusion or Darklord Dance. Hand traps are held for the opponent's turn.
  • Turn 2 (going second): Use Herald of Green Light or Buio from hand to negate the first Spell or monster effect, then Fusion or Special Summon into the Extra Deck threat. Requires the illegal third Herald of Orange Light to be cut to one copy before the hand-trap plan is reliable.
  • Recovery: Banishment of the Darklords and Darklord Gulgolet search or re-summon Darklords from the GY; Mutiny in the Sky recovers a Fusion engine from the GY.
  • After siding: No side deck is present (side_count 0), so no post-side plan can be evaluated.

Why it scores here

The list is illegal: Herald of Orange Light is run three times against a Limited cap of one, so the score is structural and theoretical only, capped low per the rubric. The system opens a Fusion or searcher-driven line in most hands (P(at least one searcher-text card in a 5-card opening hand) is about 0.99; P(at least one of the 7 archetype-core copies) is about 0.64), but the engine is split across Darklord (26 copies) and Gem-Knight (11 copies) sub-archetypes with no exact-name purity, which raises brick risk. Interaction is layered (12 negation-text cards, 12 removal-text cards, 3 hand traps), and the Fusion ceiling is high, but no recorded boards exist, so floor and median are text-only inference. The deck has no side deck, which caps adaptability, and it has no matchup or tournament data, so meta and matchup scores are provisional. Popularity and archetype usage were not used as evidence of strength, and card scores were not averaged into the deck score.

Dimension scores

# Dimension Score Evidence
D1 Engine Accessibility & Consistency 62 P(at least one searcher-text card in a 5-card opening hand) = 0.987; P(at least one of 7 archetype-core copies) = 0.64; Darklord/Gem-Knight split limits coherence (Inferred)
D2 Opening-Hand Quality & Brick Management 55 14 Level-0 Spell/Trap cards and a 15-card Fusion Extra Deck raise dead-draw risk; copy histogram 8/4/8 is reasonable; no side deck to fix bricks (Inferred)
D3 Combo Conversion & Ceiling 60 Ceiling from Fusion boards to The First Darklord (4000 ATK), Darklord Eveningstar and Gem-Knight Lady Brilliant Diamond; no combos_evidence boards, so text-only read (Inferred)
D4 Combo Floor & Median Output 50 No recorded boards, so median and floor are unmeasured; a typical line appears to need 2 or more cards to reach a Fusion (Inferred)
D5 Interruption Resilience & Route Redundancy 60 Three hand traps, Darklord Rebellion, The Sanctified Darklord and Gulgolet/Contact recursion give several independent routes after disruption (Inferred)
D6 Resource Economy, Recovery & Grind 62 Mutiny in the Sky, Darklord Contact and Gulgolet recover from the GY; Banishment and Gem-Knight Quartz search (Inferred from text)
D7 End-Board & Interaction Quality 66 12 negation-text and 12 removal-text cards plus 3 hand traps; illegal third Herald copy lowers the score (Inferred from text and flags)
D8 Going-Second & Board-Breaking Power 58 Herald of Green Light and Buio give going-second negation; removal coverage is decent; no observed going-second split (Inferred)
D9 Offensive Pressure & Closing Power 66 Endboard ATK reaches 3400 to 4000 via Lady Brilliant Diamond, Luce the Dusk's Dark (3500) and The First Darklord (4000); piercing and direct text is absent (Verified stat / Inferred)
D10 Main Deck Efficiency & Flexibility 50 40 Main cards with 20 distinct cards; 0% exact-name archetype purity and 55 off-archetype copies lower coherence (Verified composition)
D11 Extra Deck Efficiency & Coverage 60 15 Fusion Extra Deck cards across 9 distinct names; Eveningstar and First Darklord run 3 copies each; no flex slots verified (Verified composition)
D12 Side Deck Adaptability 10 side_count is 0, so there is no side deck and no post-side plan (Verified)
D13 Matchup Coverage & Format Fit 50 No tournament link and no dated meta sample, so matchup and format fit are provisional (Provisional)
D14 Pilotability & Error Tolerance 40 Multi-step Fusion lines with several decision points and a split Darklord/Gem-Knight engine raise pilot error risk (Inferred)

How the score was computed

Strategy profile: Midrange primary with Combo secondary; structural weights used as published, D13 kept with provisional score. Structural ≈ 56, Going First ≈ 58, Going Second ≈ 55, Meta = provisional, Tournament Reliability ≈ 45. Modifiers: banlist_exposure (-8); hard_garnet_burden (-2); engine_conflict (-2). Final formula: No reliable metagame: 0.80*Structural + 0.20*TournamentReliability = 0.80*56 + 0.20*45 = 53.8; modifiers -12 gives 41.8; Illegal-deck cap applied gives 35 (theoretical/structural-only)

Probability & combo summary

  • Opening a starter: P(≥1) ≈ 0.99 · key two-card combo ≈ — · full-brick estimate ≈ — (all Inferred)
  • Combo output: best PowerIndex —, median —, board-per-starter —
  • Turn order: 0 going-first lines vs 0 going-second lines

Strengths

  • Searcher density (22 searcher-text cards) gives high starter access
  • Layered interaction: 12 negation-text, 12 removal-text and 3 hand traps
  • High Fusion Extra Deck ceiling (Eveningstar, First Darklord, Lady Brilliant Diamond)
  • Recursion from the GY (Gulgolet, Contact, Mutiny)

Weaknesses

  • Illegal copy count: Herald of Orange Light run 3 times against a limit of 1
  • No side deck, so no post-side adaptability
  • Split Darklord/Gem-Knight engine with 0% exact-name purity
  • No recorded boards, so combo floor and median are unmeasured

Critical choke points

  • Brilliant Fusion (1 copy) and Mutiny in the Sky (3) gate most Fusion lines
  • Hand traps depend on the Herald cards, one of which is illegal beyond one copy
Priority Remove Add Reason
1 2 copies of Herald of Orange Light Legal filler (Herald of Green Light is already present) Restores legality; the deck cannot receive a normal Final Contextual score while illegal
2 A low-impact Level-0 spell or trap A 1-card side deck of 3 to 5 cards against the top archetypes Adds post-side adaptability; the deck currently has none

Evidence & confidence

  • Verified: Legality: Herald of Orange Light run 3 vs limit 1 (Illegal); Main 40, Extra 15, Side 0 counts; Probabilities computed from the main-deck list; Card text and composition from the resolved list
  • Inferred: Consistency estimates (D1, D2) from hypergeometric draws and text; Interaction density (D7) from text flags; Going-first and going-second scores; Combo ceiling (D3) from card text
  • Provisional: Meta Power (null); Matchup and format fit (D13); Tournament reliability
  • Data gaps: no combos supplied; combo floor, median and ceiling are text-only inference no tournament link; archetype meta-share and per-pilot match record absent no win-rate telemetry; going-first/second, matchup and brick rates are Inferred or Unknown Meta Power is Provisional unless a dated metagame sample is supplied No side deck present, so post-side performance cannot be assessed

More Master Duel Info

Gem-Knights

Gem-Knights Breakdown

 
 

 

 

 

 

 

 
 

 

 
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